​Engineering Resource Associates, Inc. conducted a GIS analysis for the mapping of overland flow paths for the Village of Lisle and surrounding tributary areas. The exhibits show overland flow routes of the natural drainage pattern of stormwater runoff during storm events and display a flow path at all locations that have at least 1-acre of area tributary.

The overland flow path maps will be used by the Village of Lisle to inform decisions regarding the permitting of sheds, garages, fences, pools and other structures that could block overland flow routes or be susceptible to flood damages. It also serves as a useful field reference when addressing local flooding issues and complaints by residents and other property owners outside of the flood plain. To find out more about this project, follow the link below:

​ERA staff recently completed design plans and specifications for a roadway reconstruction and water main improvement project along Western Avenue in the Village of Northbrook. Extensive coordination was required with the Village, School District 30 and other stakeholders to develop detailed construction staging and maintenance of traffic plans to minimize potential impacts to Wescott School while school is in session and maximize the work being completed while school is out for the summer.

An open house was held the evening of March 20, 2018 at Wescott School to relay information to members of the public that may be impacted by construction. ERA prepared several exhibits to promote active discussions with residents, including a 30-foot long scaled map of the project area depicting the proposed improvements.